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Finding the Fourth Proportional to 200,506.60, 300,803.10 and 60,279.40

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Solution

The fourth proportional to 200,506.60, 300,803.10 and 60,279.40 is: 90,432.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,506.60 : 300,803.10 = 60,279.40 : x
  2. Step 2: Convert to fraction form
    200,506.60/300,803.10 = 60,279.40/x
  3. Step 3: Cross multiply
    200,506.60x = 300,803.10 × 60,279.40
  4. Step 4: Simplify right side
    200,506.60x = 18,132,230,386.14
  5. Step 5: Solve for x
    x = 18,132,230,386.14/200,506.60
  6. Step 6: Final answer
    x = 90,432.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.